<template>
    <div>

		<div id="slider" class="mui-slider">
					<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
						<div class="mui-scroll">
							<span :class="['mui-control-item',item.id==0?'mui-active':'']" 
							v-for="item in category" 
							:key="item.id"
							@tap="getPhotoByCategory(item.id)" 
							>
								{{item.title}}
							</span>
						</div>
					</div>

		</div>
		<ul class="lazyul">
			<router-link tag="li" v-for="item in photolist" :key="item.id" :to="'/home/photoinfo/'+item.id">
				<img v-lazy="item.img_url">
				<div class="info">
					<h1 class="info-titile">{{item.title}}</h1>
					<div class="info-content">{{item.zhaiyao}}</div>
				</div>
			</router-link>
		</ul>


  </div>
</template>

<script>
import mui from "../../../lib/mui/js/mui.js";
export default {
    data(){
        return{
			category:[],
			photolist:[]
		}
    },
	created(){
		this.getPhotoCategory();
		this.getPhotoByCategory(0);
	},
    methods: {
		async getPhotoCategory(){
			const {data}=await this.$http.get("/api/getimgcategory")
			if(data.status==0){
				// 手动补全分类信息
				data.message.unshift({title:"全部",id:0});
				this.category=data.message;
			}
		},
		async getPhotoByCategory(id){
			// 根据图片分类的id来获取对应的图片
			const {data}=await this.$http.get('/api/getimages/'+id)
			if(data.status==0)return this.photolist=data.message
		}
	}, 
    mounted() {
    // 当此钩子函数执行的时候，我们才可以进行控件或插件的初始化工作；
        mui(".mui-scroll-wrapper").scroll({
        deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
             });
    }
    
}
</script>

<style lang="scss" scoped>
.mui-slider {
  touch-action: pan-x;
}


.lazyul{
	margin:0;
	padding:10px;
	li{
		background-color:#ccc;
		text-align: center;
		box-shadow: 0 0 7px gray;//设置阴影
		position: relative;
		img{
			vertical-align: middle;//设置图片显示的内容占据父元素的中部
			width: 100%;
		}
		img[lazy=loading] {
		width: 40px;
		height: 300px;
		margin: auto;
		}	
	}
	li+li{
		margin-top: 10px;

	}
}
.info{
	position:absolute;//设置定位，将文字信息定位到图片上，子绝父相
	bottom: 0;
	color:#fff;
	background-color: rgba(0,0,0,0.5);
	max-height: 86px;//设置div的出现的最大高度
	.info-titile{
		font-size: 14px;
	}
	.info-content{
		font-size:13px;
		text-align: left;
	}


}
</style>